Method of producing copper-coated metallic articles



BUY H. CHRIST, F BETHLEHEM, PENNSYLVANLA.

METEGD 0F PRODUCING COPPER COATED METALLIC ARTICLES.

No Drawing.

To all whom it may" concern:

Be it known that l, ROY H. CHRIST, a citizen of the United States, residing at 2023 TV est Broad Street, Bethlehem, county of Lehigh, and State of Pennsylvania, have invented certain new and useful Improvements in Methods of Producing Copper-Coated Metallic Articles, of which the following is a specification.

The present invention relates to methods of producing copper coated metallic articles,

particularly tomethodsfof producing articles fabricated of ferrous materials having protective-copper coatings, and to the novel product obtained by practicing the method.

lid

A. number of methods have been hereto-' fore suggested whereby ferrous materials or articles may be provided With copper coatings for the purpose of protecting the same against the action of the atmosphere,'etc. These methods have, however, contemplated only the application to the article in question of a coat of copper by mechanical, electrochemical or metallurgical processes, the copper or copper solution being prepared apart from the article and applied thereto by one of the processes indicated. ,The present invention, however, enables a copper coated article to be produced without a coating operation in the strict sense of the Word, so that the protective coating is produced in a simpler and less expensive manner than any heretofore produced.

lln accordance with the present invention articles or materials are fabricated of steel or iron which contain substantially one per cent or more of copper. The articles thus prepared are heated in an oxidizing atmosphere to a tem erature which may vary between 1100 and 2000 degrees Fahrenheit. The heated articles are then cooled, referably by quenching in oil or Water. coat.- ing of metallic copper is thus formed upon which is superposed a scale of iron 0X1dl8.' This scale may be removed by any suitable mechanical or chemical means, leaving the copper coating. The preferred method of removing scale is by submerging the article in abath of molten borer.

Amman filed. March 1, was. Serial a. 622,202.

I The copper film thus formed is of sufficient thickness to alto-rd the full protection usually realized in articles coated in a more laborious and expensive manner and is so bound to the surface of the article that detachment therefrom Will not occur.

Having thus described the invention, What is claimed as new vand desired to be secured by Letters Patent is:

l. The method of producing copper coated materials or articles consisting in forming an an alloy of ferrous material and copper, heating the alloy above 1100 F. in an oxidizing atmosphere and cooling the same.

2. The method of producing copper coated materials or articles consisting in forming hit an alloy of ferrous material and copper, the copper comprising one per cent or more of the alloy, heating the alloy above 1100 F, in an oxidizing atmosphere and cooling the same.

3. The method of producing copper coated materials or articles consisting in forming an alloy of ferrous material and copper, the copper comprising one per cent or more or the alloy, heating the alloy to a temperature l5 between 1100 F. and 2000 F., cooling the same, and removing the scale of iron oxide.

4-. The method-Eof producing copper coated materials or articles consisting in forming an alloy of ferrous material and copper, to the copper comprising one per cent or more of the alloy, heating the alloy to a tempera-' ture'between 1100 F. and 2000 F, quenching the same in a liquid and removing the scale of iron oxide formed.

5. The method otproducing copper coated materials or articles consisting in forming an alloy of ferrous material and copper, the copper comprising one per cent or more of the alloy, forming a scale oitiron oxide on W the same by heating to a temperature between1100 F. and 2000 F. and removing Elie scale by immersing in a bath of molten orax.

In testimony whereof I hereunto afix my W signature.

lltUY H. CHRIST. 

